Substance profile
Propylenediamine
Propylenediamine: 1,2-propylenediamine appears as a colorless liquid with an ammonia-like odor.
01 · Identification
What Propylenediamine is
Propylenediamine: 1,2-propylenediamine appears as a colorless liquid with an ammonia-like odor. Its molecular formula is C3H10N2 and its molecular weight is 74.13 g/mol. It boils at 121 °C, melts at -37.2 °C, is very soluble in water.
Under the GHS it carries the signal word Danger. It is classed as corrosives.
02 · GHS classification
Hazards and label elements
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
| Code | Hazard statement |
|---|---|
| H226 | Flammable liquid and vapour. |
| H312 | Harmful in contact with skin. |
| H302 | Harmful if swallowed. |
| H314 | Causes severe skin burns and eye damage. |
Precautionary statements: P210, P233, P241, P242, P260, P270, P280, P301, P302, P310, P312, P330, P331, P352, P403
03 · Physical and chemical properties
Propylenediamine properties
Every value is shown with the conditions it was measured under and the source it came from. Where sources disagree, all values are listed rather than one being picked — the difference is usually a different form of the substance, not an error.
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | 120.5 °C (248.9 °F) | at 760 mmHg | CAMEO |
| 119 °C (246.2 °F) | ICSC | ||
| 118.9 °C (246 °F) | at 760 mmHg | DOE PAC | |
| Melting point | -37.22 °C (-35 °F) | CAMEO | |
| -12 °C (10.4 °F) | ICSC | ||
| Density | 0.8584 g/cm³ | CAMEO | |
| 0.9 g/cm³ | ICSC | ||
| 0.9 g/cm³ | at 25 °C | DOE PAC | |
| Solubility | Very soluble (NTP, 1992) | CAMEO | |
| Solubility in water: miscible | ICSC | ||
| Vapor pressure | 9.0007 mmHg | at 20 °C | ICSC |
| 9 mmHg | Haz-Map | ||
| Flash point | 33.33 °C (92 °F) | CAMEO | |
| 33 °C (91.4 °F) | ICSC | ||
| Autoignition temperature | 416 °C (780.8 °F) | ICSC | |
| Lower explosive limit (LEL) | 2.2 % by volume | ICSC | |
| Upper explosive limit (UEL) | 11.1 % by volume | ICSC | |
| Vapor density | 2.6 (air = 1) | CAMEO |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling Propylenediamine
Reactivity
1,2-PROPYLENEDIAMINE neutralizes acids in exothermic reactions to form salts plus water. May be incompatible with isocyanates, halogenated organics, peroxides, phenols (acidic), epoxides, anhydrides, and acid halides. May generate hydrogen, a flammable gas, in combination with strong reducing agents such as hydrides.
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check Propylenediamine in the storage compatibility matrix →